Unable to open a file

**Unable to open a file -** 10-08-2010, 07:32 AM

So, I go to school today and try to open my Alice porject, which is due today. And guess what? Today, of all days, it's unable to open. It fails to load after attempting to load 3D Text. Is there some easy way to fix this? I need it fixed by tuesday at the latest

x2495iiii · 10-08-2010, 11:59 AM

What did you do to the 3d text? You didn't set the extrusion to 0 did you?

Also, theres a way to fix it, but its nasty and I've only done it successfully like once. You need to extract the contents of the .a2w file (I use 7-zip to do this), then remove the 3d text and any references to it, then zip it up and try running it in Alice.

10-11-2010, 05:06 PM

I don't think I did. I can open it at home and remove it, but I don't know if that will work till tomorrow. But why would that make it impossible to open?

x2495iiii · 10-11-2010, 08:42 PM

Division, probably. Alice uses math and pictures of flat text to make 3d text, but when the extrusion is zero, it's dividing by zero (probably) and cannot load the text itself when it's asked to re-draw it upon opening the world.

Thus, you have a problem element which causes Alice to not open the file, even if you intend to remove said problem element.

Stupid, eh?

07:44 AM

Ok, now I am certain it is not set to zero, but it still wont open! My computer studies teacher is unhappy. I may have to take the 3D text out completely and risk not getting as good a mark.
All the text is is a variable for an objects height above the ground. Is it maybe because of the variable?

x2495iiii · 10-12-2010, 10:36 AM

Post your world and we can try to fix it. No guarantees, though.

10-12-2010, 03:42 PM

All right. Hope you can help. Try not to be jealous of my amazing pogram

If not, thanks for trying anyways. I have enjoyed using Alice for school.

08:05 PM

Unable to load world

Alice version: 2.2 06/15/2010

Throwable that caused the error:
java.lang.NullPointerException
at edu.cmu.cs.stage3.alice.core.geometry.Text3D.updat eExtrusion(Text3D.java:87)
at edu.cmu.cs.stage3.alice.core.geometry.Text3D.prope rtyChanged(Text3D.java:77)
at edu.cmu.cs.stage3.alice.core.Element.propertyChang ed(Element.java:265)
at edu.cmu.cs.stage3.alice.core.Property.onChanged(Pr operty.java:423)
at edu.cmu.cs.stage3.alice.core.Property.onSet(Proper ty.java:438)
at edu.cmu.cs.stage3.alice.core.Property.set(Property .java:455)
at edu.cmu.cs.stage3.alice.core.Property.decodeObject (Property.java:626)
at edu.cmu.cs.stage3.alice.core.Property.decode(Prope rty.java:641)
at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1460)
at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1477)
at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1477)
at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1525)
at edu.cmu.cs.stage3.alice.authoringtool.dialog.LoadE lementProgressPane.construct(LoadElementProgressPa ne.java:37)
at edu.cmu.cs.stage3.progress.ProgressPane$2.run(Prog ressPane.java:84)
at java.lang.Thread.run(Thread.java:619)

Thats the error code that keeps appearing whenever I open it. Even the backups don't work.
Alright, it doesnt seem like I am going to get a response. I guess I will have to restart my project. If you end up fixing it, please tell me. If not, thats fine.

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	#1 (permalink)
pucu2 Guest Status: Posts: n/a	Unable to open a file - 10-08-2010, 07:32 AM So, I go to school today and try to open my Alice porject, which is due today. And guess what? Today, of all days, it's unable to open. It fails to load after attempting to load 3D Text. Is there some easy way to fix this? I need it fixed by tuesday at the latest

	#2 (permalink)
x2495iiii Super Moderator Status: Offline Posts: 3,508 Join Date: Dec 2008 Location: Somewhere in the Continental U.S.	10-08-2010, 11:59 AM What did you do to the 3d text? You didn't set the extrusion to 0 did you? Also, theres a way to fix it, but its nasty and I've only done it successfully like once. You need to extract the contents of the .a2w file (I use 7-zip to do this), then remove the 3d text and any references to it, then zip it up and try running it in Alice.

	#3 (permalink)
pucu2 Guest Status: Posts: n/a	10-11-2010, 05:06 PM I don't think I did. I can open it at home and remove it, but I don't know if that will work till tomorrow. But why would that make it impossible to open?

	#4 (permalink)
x2495iiii Super Moderator Status: Offline Posts: 3,508 Join Date: Dec 2008 Location: Somewhere in the Continental U.S.	10-11-2010, 08:42 PM Division, probably. Alice uses math and pictures of flat text to make 3d text, but when the extrusion is zero, it's dividing by zero (probably) and cannot load the text itself when it's asked to re-draw it upon opening the world. Thus, you have a problem element which causes Alice to not open the file, even if you intend to remove said problem element. Stupid, eh?

	#5 (permalink)
pucu2 Guest Status: Posts: n/a	10-12-2010, 07:25 AM Ok, now I am certain it is not set to zero, but it still wont open! My computer studies teacher is unhappy. I may have to take the 3D text out completely and risk not getting as good a mark. All the text is is a variable for an objects height above the ground. Is it maybe because of the variable? Last edited by pucu2; 10-12-2010 at 07:44 AM.

	#6 (permalink)
x2495iiii Super Moderator Status: Offline Posts: 3,508 Join Date: Dec 2008 Location: Somewhere in the Continental U.S.	10-12-2010, 10:36 AM Post your world and we can try to fix it. No guarantees, though.

	#8 (permalink)
pucu2 Guest Status: Posts: n/a	10-17-2010, 05:58 PM Unable to load world Alice version: 2.2 06/15/2010 Throwable that caused the error: java.lang.NullPointerException at edu.cmu.cs.stage3.alice.core.geometry.Text3D.updat eExtrusion(Text3D.java:87) at edu.cmu.cs.stage3.alice.core.geometry.Text3D.prope rtyChanged(Text3D.java:77) at edu.cmu.cs.stage3.alice.core.Element.propertyChang ed(Element.java:265) at edu.cmu.cs.stage3.alice.core.Property.onChanged(Pr operty.java:423) at edu.cmu.cs.stage3.alice.core.Property.onSet(Proper ty.java:438) at edu.cmu.cs.stage3.alice.core.Property.set(Property .java:455) at edu.cmu.cs.stage3.alice.core.Property.decodeObject (Property.java:626) at edu.cmu.cs.stage3.alice.core.Property.decode(Prope rty.java:641) at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1460) at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1477) at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1477) at edu.cmu.cs.stage3.alice.core.Element.load(Element. java:1525) at edu.cmu.cs.stage3.alice.authoringtool.dialog.LoadE lementProgressPane.construct(LoadElementProgressPa ne.java:37) at edu.cmu.cs.stage3.progress.ProgressPane$2.run(Prog ressPane.java:84) at java.lang.Thread.run(Thread.java:619) Thats the error code that keeps appearing whenever I open it. Even the backups don't work. Alright, it doesnt seem like I am going to get a response. I guess I will have to restart my project. If you end up fixing it, please tell me. If not, thats fine. Last edited by pucu2; 10-17-2010 at 08:05 PM.